Anant Ambani ’s latest timepiece took 100,000 hours to craft and stands as one of the most complex watches ever made. Read on to know how much it costs. So, this is by far the most expensive watch we can find in the watch collection of Anant Ambani . Another reference of this watch, the 6300A-01 was sold at an auction in November 2019 for $31.2 Million. Since then, it becomes the most expensive watch ever sold at an auction. The price of Anant Ambani 's watch The Richard Mille RM 52-04 "Skull" Blue Sapphire watch is worth USD 2,625,000, which is approximately ₹ 22,51,90,481 or 22 crore. The watch gifted by Anant Ambani features a 41 mm case made of 18K pink gold with a screw-locked crown and a sapphire crystal back, is 9.5 mm thick, and has a total diameter of 29 mm.